SE7906555L - SET FOR MANUFACTURING A BAND OF AN ALUMINUM ALLOY FOR CANS AND LID - Google Patents
SET FOR MANUFACTURING A BAND OF AN ALUMINUM ALLOY FOR CANS AND LIDInfo
- Publication number
- SE7906555L SE7906555L SE7906555A SE7906555A SE7906555L SE 7906555 L SE7906555 L SE 7906555L SE 7906555 A SE7906555 A SE 7906555A SE 7906555 A SE7906555 A SE 7906555A SE 7906555 L SE7906555 L SE 7906555L
- Authority
- SE
- Sweden
- Prior art keywords
- composition
- scrap
- aluminum
- present
- manufacture
- Prior art date
Links
- 238000004519 manufacturing process Methods 0.000 title abstract 6
- 229910000838 Al alloy Inorganic materials 0.000 title 1
- 239000000203 mixture Substances 0.000 abstract 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 abstract 6
- 229910052782 aluminium Inorganic materials 0.000 abstract 6
- 239000000155 melt Substances 0.000 abstract 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract 2
- 238000005266 casting Methods 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract 1
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 238000005097 cold rolling Methods 0.000 abstract 1
- 239000010949 copper Substances 0.000 abstract 1
- 229910052802 copper Inorganic materials 0.000 abstract 1
- 238000005098 hot rolling Methods 0.000 abstract 1
- 229910052742 iron Inorganic materials 0.000 abstract 1
- 229910052749 magnesium Inorganic materials 0.000 abstract 1
- 239000011777 magnesium Substances 0.000 abstract 1
- 229910052748 manganese Inorganic materials 0.000 abstract 1
- 239000011572 manganese Substances 0.000 abstract 1
- 229910052710 silicon Inorganic materials 0.000 abstract 1
- 239000010703 silicon Substances 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
- C22C21/06—Alloys based on aluminium with magnesium as the next major constituent
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
- B21B2003/001—Aluminium or its alloys
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/4998—Combined manufacture including applying or shaping of fluent material
- Y10T29/49988—Metal casting
- Y10T29/49991—Combined with rolling
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metal Rolling (AREA)
- Continuous Casting (AREA)
- Manufacture And Refinement Of Metals (AREA)
- Heat Treatment Of Nonferrous Metals Or Alloys (AREA)
- Containers Opened By Tearing Frangible Portions (AREA)
- Diaphragms For Electromechanical Transducers (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Nonmetallic Welding Materials (AREA)
Abstract
A composition and method whereby aluminum scrap, including consumer scrap, is recycled into aluminum sheet and aluminum containers. Aluminum scrap is melted in a heated furnace to form a melt composition. The melt is adjusted to form the present composition, consisting essentially of silicon, 0.1-1.0%; iron 0.1-0.9%; manganese 0.4-1.0%; magnesium 1.3-2.5%; copper 0.05-0.4%; and titanium, 0-0.2%, the balance being essentially aluminum. Aluminum scrap comprising consumer scrap, plant scrap, and can making scrap is heated to form the melt composition, which requires a minimum amount of adjustment to arrive at the present alloy composition. The composition is then cast and fabricated into sheet having strength and formability properties making it suitable for container manufacture. Container manufacture according to the process and composition of the present invention comprises drawn-and-ironed can body manufacture and easy-opening end manufacture. Sheet fabrication according to the present invention comprises continuously casting the molten composition to produce a moving strip; hot rolling the moving strip at casting speed; coiling and allowing the hot rolled strip to cool; and cold rolling the hot rolled strip to final gauge.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US05/931,039 US4235646A (en) | 1978-08-04 | 1978-08-04 | Continuous strip casting of aluminum alloy from scrap aluminum for container components |
Publications (2)
Publication Number | Publication Date |
---|---|
SE7906555L true SE7906555L (en) | 1980-02-05 |
SE433948B SE433948B (en) | 1984-06-25 |
Family
ID=25460134
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE7906555A SE433948B (en) | 1978-08-04 | 1979-08-02 | SET FOR MANUFACTURING A BAND OF AN ALUMINUM ALLOY FOR CANS AND LID |
Country Status (17)
Country | Link |
---|---|
US (1) | US4235646A (en) |
JP (1) | JPS5521600A (en) |
AU (1) | AU522570B2 (en) |
BE (1) | BE878055A (en) |
CA (1) | CA1171234A (en) |
CH (1) | CH641494A5 (en) |
DE (1) | DE2901020A1 (en) |
ES (1) | ES483108A1 (en) |
FR (1) | FR2432556A1 (en) |
GB (1) | GB2027743B (en) |
IN (1) | IN151536B (en) |
IS (1) | IS1107B6 (en) |
IT (1) | IT1122700B (en) |
NL (1) | NL7905906A (en) |
NO (1) | NO153340C (en) |
SE (1) | SE433948B (en) |
ZA (1) | ZA793977B (en) |
Families Citing this family (76)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2065516B (en) * | 1979-11-07 | 1983-08-24 | Showa Aluminium Ind | Cast bar of an alumium alloy for wrought products having mechanical properties and workability |
JPS5669346A (en) * | 1979-11-07 | 1981-06-10 | Showa Alum Ind Kk | Aluminum alloy for working and its manufacture |
JPS60140B2 (en) * | 1980-01-28 | 1985-01-05 | 株式会社神戸製鋼所 | Manufacturing method of Al-based alloy plate for magnetic disks |
JPS56158854A (en) * | 1980-05-12 | 1981-12-07 | Mitsubishi Alum Co Ltd | Manufacture of aluminum alloy sheet for deep drawing with low earing ratio |
GB2085925B (en) * | 1980-10-20 | 1985-01-09 | Alcan Int Ltd | Decorating of aluminium scrap |
US4318755A (en) * | 1980-12-01 | 1982-03-09 | Alcan Research And Development Limited | Aluminum alloy can stock and method of making same |
JPS57143472A (en) * | 1981-03-02 | 1982-09-04 | Sumitomo Light Metal Ind Ltd | Manufacture of aluminum alloy sheet for forming |
US4411707A (en) * | 1981-03-12 | 1983-10-25 | Coors Container Company | Processes for making can end stock from roll cast aluminum and product |
US4614224A (en) * | 1981-12-04 | 1986-09-30 | Alcan International Limited | Aluminum alloy can stock process of manufacture |
FR2526047A1 (en) * | 1982-04-30 | 1983-11-04 | Conditionnements Aluminium | PROCESS FOR THE PRODUCTION OF ALUMINUM ALLOY PRODUCTS FOR STRETCHING |
JPS58224141A (en) * | 1982-06-21 | 1983-12-26 | Sumitomo Light Metal Ind Ltd | Cold roller aluminum alloy plate for forming and its manufacture |
ES8501003A1 (en) * | 1982-07-15 | 1984-11-01 | Continental Group | Aluminum alloy and process for manufacture. |
JPS5976864A (en) * | 1982-10-22 | 1984-05-02 | Nippon Light Metal Co Ltd | Manufacture of thin aluminum alloy plate for forming |
DE3241745C2 (en) * | 1982-11-11 | 1985-08-08 | Mannesmann AG, 4000 Düsseldorf | Process for the production of hot-rolled steel strip from continuously cast raw material in directly successive work steps |
CH657546A5 (en) * | 1982-12-16 | 1986-09-15 | Alusuisse | METHOD FOR PRODUCING A TAPE SUITABLE FOR THE PRODUCTION OF CAN LIDS. |
US4430119A (en) | 1982-12-29 | 1984-02-07 | Aluminum Company Of America | Selective removal of magnesium in the consumption of aluminum used beverage container scrap |
DE3364258D1 (en) * | 1983-04-11 | 1986-07-31 | Kobe Steel Ltd | Bake-hardenable aluminium alloy sheets and process for manufacturing same |
JPS60194040A (en) * | 1984-02-18 | 1985-10-02 | Kobe Steel Ltd | Aluminum alloy substrate for disc having superior suitability to plating |
JPS60187656A (en) * | 1984-03-05 | 1985-09-25 | Sumitomo Light Metal Ind Ltd | Aluminum alloy sheet for packaging having excellent corrosion resistance and its production |
FR2617189B1 (en) * | 1987-06-24 | 1989-10-20 | Cegedur | ALUMINUM ALLOY SHEETS CONTAINING MAGNESIUM SUITABLE FOR STAMPING AND STRETCHING BOX BODIES AND PROCESS FOR OBTAINING SAME |
JPH0196346A (en) * | 1987-10-08 | 1989-04-14 | Sky Alum Co Ltd | Aluminum alloy stretched material, ingot for manufacturing said stretched material and manufacture of thereof |
JPH0225539A (en) * | 1988-07-13 | 1990-01-29 | Sky Alum Co Ltd | Aluminum alloy hard plate for forming and its production |
US5104465A (en) * | 1989-02-24 | 1992-04-14 | Golden Aluminum Company | Aluminum alloy sheet stock |
US5106429A (en) * | 1989-02-24 | 1992-04-21 | Golden Aluminum Company | Process of fabrication of aluminum sheet |
US5110545A (en) * | 1989-02-24 | 1992-05-05 | Golden Aluminum Company | Aluminum alloy composition |
US4976790A (en) * | 1989-02-24 | 1990-12-11 | Golden Aluminum Company | Process for preparing low earing aluminum alloy strip |
JPH089759B2 (en) * | 1989-08-25 | 1996-01-31 | 住友軽金属工業株式会社 | Manufacturing method of aluminum alloy hard plate having excellent corrosion resistance |
WO1992004479A1 (en) * | 1990-09-05 | 1992-03-19 | Golden Aluminum Company | Process of fabrication of aluminum sheet |
ES2051258T3 (en) * | 1991-03-14 | 1996-12-01 | Pechiney Rhenalu | ALUMINUM ALLOYS FOR STRENGTHY, COMFORTABLE AND ISOTROPABLE STAMPING-STRETCHING. |
US5356495A (en) * | 1992-06-23 | 1994-10-18 | Kaiser Aluminum & Chemical Corporation | Method of manufacturing can body sheet using two sequences of continuous, in-line operations |
FR2703072B1 (en) * | 1993-03-26 | 1995-04-28 | Pechiney Rhenalu | Sheets or strips of Al alloys (5000 series) with low mechanical anisotropy and their production process. |
FR2707669B1 (en) * | 1993-07-16 | 1995-08-18 | Pechiney Rhenalu | Process for the production of a thin sheet suitable for the production of components for boxes. |
WO1995018876A1 (en) * | 1994-01-04 | 1995-07-13 | Golden Aluminum Company | Method and composition for castable aluminum alloys |
US5681405A (en) * | 1995-03-09 | 1997-10-28 | Golden Aluminum Company | Method for making an improved aluminum alloy sheet product |
WO1997011205A1 (en) * | 1995-09-18 | 1997-03-27 | Kaiser Aluminum & Chemical Corporation | A method for making beverage can sheet |
US5655593A (en) * | 1995-09-18 | 1997-08-12 | Kaiser Aluminum & Chemical Corp. | Method of manufacturing aluminum alloy sheet |
US6045632A (en) * | 1995-10-02 | 2000-04-04 | Alcoa, Inc. | Method for making can end and tab stock |
US5742993A (en) * | 1995-11-03 | 1998-04-28 | Kaiser Aluminum & Chemical Corporation | Method for making hollow workpieces |
US5862582A (en) * | 1995-11-03 | 1999-01-26 | Kaiser Aluminum & Chemical Corporation | Method for making hollow workpieces |
US6120621A (en) * | 1996-07-08 | 2000-09-19 | Alcan International Limited | Cast aluminum alloy for can stock and process for producing the alloy |
US5913989A (en) * | 1996-07-08 | 1999-06-22 | Alcan International Limited | Process for producing aluminum alloy can body stock |
US6004409A (en) * | 1997-01-24 | 1999-12-21 | Kaiser Aluminum & Chemical Corporation | Production of high quality machinable tolling plate using brazing sheet scrap |
US6045636A (en) * | 1997-05-15 | 2000-04-04 | General Motors Corporation | Method for sliver elimination in shearing aluminum sheet |
US5976279A (en) * | 1997-06-04 | 1999-11-02 | Golden Aluminum Company | For heat treatable aluminum alloys and treatment process for making same |
US5993573A (en) * | 1997-06-04 | 1999-11-30 | Golden Aluminum Company | Continuously annealed aluminum alloys and process for making same |
AU755412B2 (en) | 1997-06-04 | 2002-12-12 | Nichols Aluminum-Golden, Inc. | Continuous casting process for producing aluminum alloys having low earing |
US5985058A (en) * | 1997-06-04 | 1999-11-16 | Golden Aluminum Company | Heat treatment process for aluminum alloys |
US20030173003A1 (en) * | 1997-07-11 | 2003-09-18 | Golden Aluminum Company | Continuous casting process for producing aluminum alloys having low earing |
US6280543B1 (en) | 1998-01-21 | 2001-08-28 | Alcoa Inc. | Process and products for the continuous casting of flat rolled sheet |
JP2000004865A (en) * | 1998-06-25 | 2000-01-11 | Yasuyuki Moriyama | Fire extinguishing apparatus attached to cigarette |
US6143241A (en) * | 1999-02-09 | 2000-11-07 | Chrysalis Technologies, Incorporated | Method of manufacturing metallic products such as sheet by cold working and flash annealing |
US6581675B1 (en) | 2000-04-11 | 2003-06-24 | Alcoa Inc. | Method and apparatus for continuous casting of metals |
US6543122B1 (en) * | 2001-09-21 | 2003-04-08 | Alcoa Inc. | Process for producing thick sheet from direct chill cast cold rolled aluminum alloy |
AU2003215101A1 (en) * | 2002-02-08 | 2003-09-02 | Nichols Aluminum | Method of manufacturing aluminum alloy sheet |
WO2004094679A1 (en) * | 2003-04-24 | 2004-11-04 | Alcan International Limited | Alloys from recycled aluminum scrap containing high levels of iron and silicon |
KR20080109938A (en) * | 2006-05-18 | 2008-12-17 | 가부시키가이샤 고베 세이코쇼 | Process for producing aluminum alloy plate and aluminum alloy plate |
US20080041501A1 (en) * | 2006-08-16 | 2008-02-21 | Commonwealth Industries, Inc. | Aluminum automotive heat shields |
US8403027B2 (en) | 2007-04-11 | 2013-03-26 | Alcoa Inc. | Strip casting of immiscible metals |
US7846554B2 (en) * | 2007-04-11 | 2010-12-07 | Alcoa Inc. | Functionally graded metal matrix composite sheet |
US8956472B2 (en) | 2008-11-07 | 2015-02-17 | Alcoa Inc. | Corrosion resistant aluminum alloys having high amounts of magnesium and methods of making the same |
US9057143B2 (en) * | 2009-09-11 | 2015-06-16 | Nippon Light Metal Company, Ltd. | Aluminum base die material for stamper, aluminum base die for stamper and stamper |
CN103119185B (en) | 2010-09-08 | 2015-08-12 | 美铝公司 | The 7XXX aluminium alloy improved and production method thereof |
US9796502B2 (en) | 2012-01-05 | 2017-10-24 | Golden Aluminum, Inc. | Used beverage container aluminum composition and method |
WO2013172910A2 (en) | 2012-03-07 | 2013-11-21 | Alcoa Inc. | Improved 2xxx aluminum alloys, and methods for producing the same |
US9587298B2 (en) | 2013-02-19 | 2017-03-07 | Arconic Inc. | Heat treatable aluminum alloys having magnesium and zinc and methods for producing the same |
US9657375B2 (en) | 2013-06-10 | 2017-05-23 | Golden Aluminum, Inc. | Used beverage container aluminum composition and method |
GB2522719B (en) * | 2014-02-04 | 2017-03-01 | Jbm Int Ltd | Method of manufacture |
BR112017010216A2 (en) | 2014-12-19 | 2018-02-06 | Novelis Inc | aluminum alloy, shaped aluminum bottle, and aluminum alloy production method. |
BR112019007379B1 (en) | 2016-10-27 | 2022-11-08 | Novelis Inc | METHOD FOR PRODUCING AN ALUMINUM ALLOY PRODUCT, AND, ALUMINUM ALLOY PRODUCT |
MX2019004840A (en) | 2016-10-27 | 2019-06-20 | Novelis Inc | Systems and methods for making thick gauge aluminum alloy articles. |
AU2017350513B2 (en) | 2016-10-27 | 2020-03-05 | Novelis Inc. | High strength 7xxx series aluminum alloys and methods of making the same |
JP7163304B2 (en) * | 2017-03-23 | 2022-10-31 | ノベリス・インコーポレイテッド | Casting of recycled aluminum scrap |
CN110340143A (en) * | 2019-07-30 | 2019-10-18 | 周志光 | A kind of aluminium strip casting rolling mill assembly |
CN112981188B (en) * | 2020-12-30 | 2022-05-13 | 江苏鼎胜新能源材料股份有限公司 | High-toughness aluminum material for battery external package |
WO2023154425A1 (en) * | 2022-02-11 | 2023-08-17 | Kaiser Aluminum Warrick, Llc | Aluminum alloys having a high amount of recycled material |
CN116219210B (en) * | 2022-12-06 | 2024-08-13 | 洛阳龙鼎铝业有限公司 | Technological method for producing deep-drawing aluminum plate strip for kitchen ware by using recycled aluminum |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3787248A (en) * | 1972-09-25 | 1974-01-22 | H Cheskis | Process for preparing aluminum alloys |
JPS514010A (en) * | 1974-07-02 | 1976-01-13 | Kobe Steel Ltd | KANYOKOSEIKEISEIARUMINIUMUGOKIN OYOBI SONOSEIZOHOHO |
US4000009A (en) * | 1975-03-26 | 1976-12-28 | National Steel Corporation | Wrought pure grade aluminum alloy and process for producing same |
JPS51116105A (en) * | 1975-04-04 | 1976-10-13 | Kobe Steel Ltd | A process for producing aluminum alloy sheet for deep drawing |
-
1978
- 1978-08-04 US US05/931,039 patent/US4235646A/en not_active Expired - Lifetime
-
1979
- 1979-01-12 DE DE19792901020 patent/DE2901020A1/en active Granted
- 1979-07-23 CH CH680879A patent/CH641494A5/en not_active IP Right Cessation
- 1979-07-26 IS IS2503A patent/IS1107B6/en unknown
- 1979-07-27 AU AU49317/79A patent/AU522570B2/en not_active Ceased
- 1979-07-31 NL NL7905906A patent/NL7905906A/en not_active Application Discontinuation
- 1979-07-31 GB GB7926676A patent/GB2027743B/en not_active Expired
- 1979-08-02 ZA ZA00793977A patent/ZA793977B/en unknown
- 1979-08-02 JP JP9908779A patent/JPS5521600A/en active Granted
- 1979-08-02 NO NO792541A patent/NO153340C/en unknown
- 1979-08-02 SE SE7906555A patent/SE433948B/en not_active IP Right Cessation
- 1979-08-03 BE BE0/196580A patent/BE878055A/en unknown
- 1979-08-03 CA CA000333159A patent/CA1171234A/en not_active Expired
- 1979-08-03 ES ES483108A patent/ES483108A1/en not_active Expired
- 1979-08-03 IT IT24924/79A patent/IT1122700B/en active
- 1979-08-03 FR FR7920036A patent/FR2432556A1/en active Granted
- 1979-08-04 IN IN814/CAL/79A patent/IN151536B/en unknown
Also Published As
Publication number | Publication date |
---|---|
FR2432556A1 (en) | 1980-02-29 |
AU4931779A (en) | 1980-02-07 |
SE433948B (en) | 1984-06-25 |
NO792541L (en) | 1980-02-05 |
NL7905906A (en) | 1980-02-06 |
DE2901020C2 (en) | 1989-10-19 |
GB2027743B (en) | 1982-12-08 |
NO153340C (en) | 1986-02-26 |
GB2027743A (en) | 1980-02-27 |
ZA793977B (en) | 1980-08-27 |
JPS5521600A (en) | 1980-02-15 |
IS1107B6 (en) | 1983-01-10 |
CA1171234A (en) | 1984-07-24 |
DE2901020A1 (en) | 1980-02-14 |
AU522570B2 (en) | 1982-06-17 |
FR2432556B1 (en) | 1983-01-07 |
CH641494A5 (en) | 1984-02-29 |
IT7924924A0 (en) | 1979-08-03 |
IS2503A7 (en) | 1980-02-05 |
BE878055A (en) | 1979-12-03 |
ES483108A1 (en) | 1980-04-01 |
JPS6254182B2 (en) | 1987-11-13 |
US4235646A (en) | 1980-11-25 |
IT1122700B (en) | 1986-04-23 |
IN151536B (en) | 1983-05-14 |
NO153340B (en) | 1985-11-18 |
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